Forum für Wissenschaft, Industrie und Wirtschaft

Hauptsponsoren:     3M 
Datenbankrecherche:

 

NASA Spacecraft Observe Nov. 20 Solar Eruption

21.11.2012
On Nov. 20, 2012, at 7:09 a.m. EST, the sun erupted with a coronal mass ejection or CME. Not to be confused with a solar flare, a CME is a solar phenomenon that can send solar particles into space and can reach Earth one to three days later. When Earth-directed, CMEs can affect electronic systems in satellites and on Earth.

NASA's Solar Terrestrial Relations Observatory (STEREO) captured this image of a coronal mass ejection on Nov. 20, 2012 at 8:54 a.m. EST, about two hours after it left the sun. Credit: NASA/STEREO

Experimental NASA research models, based on observations from the Solar Terrestrial Relations Observatory (STEREO), show that the Nov. 20 CME left the sun at speeds of 450 miles per second, which is a slow to average speed for CMEs.

CMEs can cause a space weather phenomenon called a geomagnetic storm, which occurs when CMEs successfully connect up with the outside of the Earth's magnetic envelope, the magnetosphere, for an extended period of time.

In the past, CMEs of this speed have not usually caused substantial geomagnetic storms. They have caused auroras near the poles but are unlikely to cause disruptions to electrical systems on Earth or interfere with GPS or satellite-based communications systems.

NOAA's Space Weather Prediction Center (http://swpc.noaa.gov) is the United States government's official source for space weather forecasts.

What is a CME?

For answers to this and other space weather questions, please visit the Spaceweather Frequently Asked Questions page:

http://www.nasa.gov/mission_pages/sunearth/spaceweather/index.html

Karen C. Fox
NASA's Goddard Space Flight Center, Greenbelt, Md.

Karen C. Fox | EurekAlert!
Further information:
http://www.nasa.gov
http://www.nasa.gov/mission_pages/sunearth/news/News112012-cme.html

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Anzeige

Anzeige

IHR
JOB & KARRIERE
SERVICE
im innovations-report
in Kooperation mit academics
Veranstaltungen

10. Tag der Luft- und Raumfahrt in Berlin und Brandenburg zum Thema „Ferngesteuerte Flugsysteme“

30.09.2014 | Veranstaltungen

Digitale Daten für den Wald von morgen

30.09.2014 | Veranstaltungen

Die neue TRGS 509 wurde im Mai 2014 verabschiedet! HDT mit passenden Tagungen.

30.09.2014 | Veranstaltungen

 
B2B-VideoLinks
Weitere VideoLinks >>>
Aktuelle Beiträge

Eine neue Dimension für integrierte Schaltkreise: Nanomagnetische Logik in 3D

30.09.2014 | Physik Astronomie

Lernfabrik wird zum Industrie-4.0-Anwendungszentrum ausgebaut

30.09.2014 | Bildung Wissenschaft

Krebsstammzellen im Tumor bestimmen die Lebenserwartung bei Brustkrebs

30.09.2014 | Biowissenschaften Chemie